The magnetic field of earth is due to
Motion and distribution of some material in and outside the earth
Interaction of cosmic rays with the current of earth
A magnetic dipole buried at the centre of the earth
Induction effect of the sun
Explain geographic meridian and magnetic meridian.
A current carrying coil is placed with its axis perpendicular to $N-S$ direction. Let horizontal component of earth's magnetic field be $H_0$ and magnetic field inside the loop be $H$. If a magnet is suspended inside the loop, it makes angle $\theta $ with $H$. Then $\theta =$
At magnetic poles of earth, angle of dip is.....$^o$
A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at $22^o$ with the horizontal. The horizontal component of the earth’s magnetic field at the place is known to be $0.35\; G$. Determine the magnitude of the earth’s magnetic field (in $G$) at the place
Isogonic lines on magnetic map will have